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Title: Measurement of the spatially distributed temperature and soot loadings in a laminar diffusion flame using a Cone-Beam Tomography technique
Authors: Zhao, Huayong
Williams, Ben
Stone, Richard
Keywords: Temperature
Soot diameter
Soot volume fraction
Laminar diffusion flame
Issue Date: 2014
Publisher: © Elsevier
Citation: ZHAO, H., WILLIAMS, B. and STONE, R., 2014. Measurement of the spatially distributed temperature and soot loadings in a laminar diffusion flame using a Cone-Beam Tomography technique. Journal of Quantitative Spectroscopy and Radiative Transfer, 133, pp. 136-152.
Abstract: A new low-cost optical diagnostic technique, called Cone Beam Tomographic Three Colour Spectrometry (CBT-TCS), has been developed to measure the planar distributions of temperature, soot particle size, and soot volume fraction in a co-flow axi-symmetric laminar diffusion flame. The image of a flame is recorded by a colour camera, and then by using colour interpolation and applying a cone beam tomography algorithm, a colour map can be reconstructed that corresponds to a diametral plane. Look-up tables calculated using Planck's law and different scattering models are then employed to deduce the temperature, approximate average soot particle size and soot volume fraction in each voxel (volumetric pixel). A sensitivity analysis of the look-up tables shows that the results have a high temperature resolution but a relatively low soot particle size resolution. The assumptions underlying the technique are discussed in detail. Sample data from an ethylene laminar diffusion flame are compared with data in the literature for similar flames. The comparison shows very consistent temperature and soot volume fraction profiles. Further analysis indicates that the difference seen in comparison with published results are within the measurement uncertainties. This methodology is ready to be applied to measure 3D data by capturing multiple flame images from different angles for non-axisymmetric flame. © 2013 Elsevier Ltd.
Description: This paper was accepted for publication in the journal Journal of Quantitative Spectroscopy and Radiative Transfer and the definitive published version is available at: http://dx.doi.org/10.1016/j.jqsrt.2013.07.024
Version: Accepted for publication
DOI: 10.1016/j.jqsrt.2013.07.024
URI: https://dspace.lboro.ac.uk/2134/20060
Publisher Link: http://dx.doi.org/10.1016/j.jqsrt.2013.07.024
ISSN: 0022-4073
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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